论文部分内容阅读
点焊机上的QCr0.5Mg0.2Al0.1青铜电极,要求具有较高的硬度、耐热、导电性好、使用寿命长等性能。原热处理工艺陈旧,使用寿命不够理想,一对电极,点焊1mm厚的A_3钢板,寿命只达15000～20000个焊点。我们查阅了有关参考资料,经过多次试验后,采用如下固溶淬火—时效热处理工艺,获得比较满意的效果。经铸锭并热锻的φ32×300mm棒材,在1040±10℃加热35～40min后,升温至1060±10℃,淬入<25℃的
Spot welding machine QCr0.5Mg0.2Al0.1 bronze electrode, requires a higher hardness, heat resistance, good conductivity, long service life and other properties. The original heat treatment process obsolete, life is not ideal, a pair of electrodes, spot welding 1mm thick A_3 steel, life expectancy of only 15,000 ~ 20,000 solder joints. We consult the reference, after many tests, the following solution quenching - aging heat treatment process, get more satisfactory results. Φ32 × 300mm bar cast ingot and hot forged, heated at 1040 ± 10 ℃ for 35 ~ 40min, then heated to 1060 ± 10 ℃, quenched into <25 ℃